Digital technique for constructing variable width lines

Details Digital technique for constructing variable width lines Digital technique for constructing variable width lines

1983-01-06

1986-07-15

Krass, Errol A.

Boots, shoes, and leggings

340739, 364520, 382 55, G06F 1540, G06F 15626

Patent

active

046010025

ABSTRACT:
A method for digitally constructing variable width cartographic lines, the invention provides an algorithm for generating symbolized lines using multiply-stroked centerline data. The algorithm allows generation of software which utilizes trigonometric functions and which can be implemented in applications using vector data with vector or raster plotters. The algorithm further accounts for basic cartographic principles, existing algorithm characteristics and hardware constraints imposed by specific output devices.

REFERENCES:
patent: 4062648 (1977-12-01), Hennessee
patent: 4135245 (1979-01-01), Kemplin et al.
patent: 4259725 (1981-03-01), Andrews et al.
patent: 4283765 (1981-08-01), Rieger
patent: 4298945 (1981-11-01), Kyte et al.
patent: 4477803 (1984-10-01), Conrad
Computers & Digital Techniques, Feb. 1979 (vol. 2, No. 1), "Zone Management Processor: A Module for Generating Surfaces in Raster-Scan Colour Displays", R. L. Grimsdale et al., pp. 21-25.
Computer Graphics & Image Processing, Aug. 1979 (vol. 10, No. 4) pp. 348-365, "On the Properties of Discrete Circles, Rings, & Disks".
Computer Graphics & Image Proc., Aug. 1979 (vol. 10, No. 4), "Algorithms for Generation of Discrete Circles, Rings, & Disks", pp. 366-371.

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